<template>
    <view>
        <view v-if="$slots.trigger || $slots.$trigger" class="u-action-sheet-trigger" @click="open(true)">
            <slot name="trigger"></slot>
        </view>
        <u-popup :show="showPopup"
            mode="bottom" 
            :title="title" 
            :round="round"
            :closeable="closeable"
            :titleStyle="[{fontWeight: 'bold' },$u.addStyle(titleStyle)]"
            :safeAreaInsetBottom="safeAreaInsetBottom" 
            @close="cancel" 
        >
            <view class="u-action-sheet">
                <text class="u-action-sheet__description" :style="[{
                    marginTop: `${title && description ? 0 : '18px'}`
                }]" v-if="description">{{ description }}</text>
                <slot>
                    <u-line v-if="description"></u-line>
                    <scroll-view class="u-action-sheet__item-wrap" :scroll-y="height !='' || height > 0" :style="[{ maxHeight: $u.addUnit(height) }]">
                        <view v-for="(item, index) in actions" :key="index">
                            <!-- #ifdef MP -->
                            <button 
                                class="u-reset-button" 
                                :key="index" 
                                :openType="item.openType"
                                :lang="lang" 
                                :session-from="sessionFrom"
                                :send-message-title="sendMessageTitle" 
                                :send-message-path="sendMessagePath"
                                :send-message-img="sendMessageImg" 
                                :show-message-card="showMessageCard"
                                :app-parameter="appParameter" 
                                @tap="selectHandler(index)"
                                @getuserinfo="onGetUserInfo" 
                                @contact="onContact" 
                                @getphonenumber="onGetPhoneNumber"
                                @error="onError" 
                                @launchapp="onLaunchApp" 
                                @opensetting="onOpenSetting"
                                @chooseavatar="onChooseAvatar" 
                                :hover-class="!item.disabled && !item.loading ? 'u-action-sheet--hover' : ''"
                            >
                                <!-- #endif -->
                                <view class="u-action-sheet__item-wrap__item" @tap.stop="selectHandler(index)"
                                    :hover-class="!item.disabled && !item.loading ? 'u-action-sheet--hover' : ''"
                                    :hover-stay-time="150">
                                    <template v-if="!item.loading">
                                        <text class="u-action-sheet__item-wrap__item__name" :style="[itemStyle(index)]">{{
                                            item.name }}</text>
                                        <text v-if="item.subname" class="u-action-sheet__item-wrap__item__subname">{{
                                            item.subname }}</text>
                                    </template>
                                    <u-loading-icon v-else custom-class="van-action-sheet__loading" size="18" mode="circle" />
                                </view>
                                <!-- #ifdef MP -->
                            </button>
                            <!-- #endif -->
                            <u-line v-if="index !== actions.length - 1"></u-line>
                        </view>
                    </scroll-view>
                </slot>
                <u-gap bgColor="#eaeaec" height="6" v-if="cancelText"></u-gap>
                <view hover-class="u-action-sheet--hover" v-if="cancelText" @tap="cancel">
                    <text 
                        @touchmove.stop.prevent 
                        :hover-stay-time="150" 
                        class="u-action-sheet__cancel-text"
                    >{{ cancelText }}</text>
                </view>
            </view>
        </u-popup>
    </view>
</template>

<script>
import openType from '../../libs/mixin/openType';
import button from '../../libs/mixin/button';
import props from './props.js';
import mixin from '../../libs/mixin/mixin'
import mpMixin from '../../libs/mixin/mpMixin';
/**
 * ActionSheet 操作菜单
 * @description 本组件用于从底部弹出一个操作菜单，供用户选择并返回结果。本组件功能类似于uni的uni.showActionSheetAPI，配置更加灵活，所有平台都表现一致。
 * @tutorial https://uview.d3u.cn/components/actionSheet.html
 * 
 * @property {Boolean}			show				操作菜单是否展示 （默认 false ）
 * @property {String}			title				操作菜单标题
 * @property {String}			description			选项上方的描述信息
 * @property {Array<Object>}	actions				按钮的文字数组，见官方文档示例
 * @property {String}			cancelText			取消按钮的提示文字,不为空时显示按钮
 * @property {Boolean}			closeOnClickAction	点击某个菜单项时是否关闭弹窗 （默认 true ）
 * @property {Boolean}			safeAreaInsetBottom	处理底部安全区 （默认 true ）
 * @property {String}			openType			小程序的打开方式 (contact | launchApp | getUserInfo | openSetting ｜getPhoneNumber ｜error )
 * @property {Boolean}			closeOnClickOverlay	点击遮罩是否允许关闭  (默认 true )
 * @property {Number|String}	round				圆角值，默认无圆角  (默认 0 )
 * @property {Number|String}	height				高度，默认不限制  (默认 '' )
 * @property {String}			lang				指定返回用户信息的语言，zh_CN 简体中文，zh_TW 繁体中文，en 英文
 * @property {String}			sessionFrom			会话来源，openType="contact"时有效
 * @property {String}			sendMessageTitle	会话内消息卡片标题，openType="contact"时有效
 * @property {String}			sendMessagePath		会话内消息卡片点击跳转小程序路径，openType="contact"时有效
 * @property {String}			sendMessageImg		会话内消息卡片图片，openType="contact"时有效
 * @property {Boolean}			showMessageCard		是否显示会话内消息卡片，设置此参数为 true，用户进入客服会话会在右下角显示"可能要发送的小程序"提示，用户点击后可以快速发送小程序消息，openType="contact"时有效 （默认 false ）
 * @property {String}			appParameter		打开 APP 时，向 APP 传递的参数，openType=launchApp 时有效
 * 
 * @event {Function} select			点击ActionSheet列表项时触发 
 * @event {Function} close			点击取消按钮时触发
 * @event {Function} getuserinfo	用户点击该按钮时，会返回获取到的用户信息，回调的 detail 数据与 wx.getUserInfo 返回的一致，openType="getUserInfo"时有效
 * @event {Function} contact		客服消息回调，openType="contact"时有效
 * @event {Function} getphonenumber	获取用户手机号回调，openType="getPhoneNumber"时有效
 * @event {Function} chooseavatar	选择头像回调，openType="chooseAvatar"时有效
 * @event {Function} error			当使用开放能力时，发生错误的回调，openType="error"时有效
 * @event {Function} launchapp		打开 APP 成功的回调，openType="launchApp"时有效
 * @event {Function} opensetting	在打开授权设置页后回调，openType="openSetting"时有效
 * @example <u-action-sheet :actions="list" :title="title" :show="show"></u-action-sheet>
 */
export default {
    name: "u-action-sheet",
    // 一些props参数和methods方法，通过mixin混入，因为其他文件也会用到
    mixins: [openType, button, mixin,mpMixin, props],
    data() {
        return {
            isTrigger: false,
            showPopup: false,
        };
    },
    computed: {
        // 操作项目的样式
        itemStyle() {
            return (index) => {
                let style = {};
                if (this.actions[index].color) style.color = this.actions[index].color;
                if (this.actions[index].fontSize) style.fontSize = uni.$u.addUnit(this.actions[index].fontSize);
                // 选项被禁用的样式
                if (this.actions[index].disabled) style.color = '#c0c4cc';
                return style;
            };
        },
    },
    watch: {
		show: {
			immediate: true,
			handler(n) {
				this.isTrigger = false
				this.showPopup = n
			}
		}
    },
    // #ifdef VUE3
    emits: ["select", "close"],
    // #endif
    methods: {
        open(isTrigger) {
			this.isTrigger = isTrigger
			this.showPopup = true
		},
        // 点击取消按钮
        cancel() {
            if(this.isTrigger){
                this.showPopup = false
            }
            this.$emit('close');
        },
        close() {
            this.showPopup = false
        },
        selectHandler(index) {
            const item = this.actions[index];
           
            if (item && !item.disabled && !item.loading) {
                this.$emit('select', item);

                if(this.isTrigger || this.closeOnClickAction){
                    this.showPopup = false
                }

                if (this.closeOnClickOverlay) {
                    this.$emit('close');
                }
            }
        },
    }
};
</script>

<style lang="scss" scoped>
@import "../../libs/css/components.scss";
$u-action-sheet-reset-button-width: 100% !default;
$u-action-sheet-description-font-size: 13px !default;
$u-action-sheet-description-color: 14px !default;
$u-action-sheet-description-margin: 18px 15px !default;
$u-action-sheet-item-wrap-item-padding: 15px !default;
$u-action-sheet-item-wrap-name-font-size: 16px !default;
$u-action-sheet-item-wrap-subname-font-size: 13px !default;
$u-action-sheet-item-wrap-subname-color: #c0c4cc !default;
$u-action-sheet-item-wrap-subname-margin-top: 10px !default;
$u-action-sheet-cancel-text-font-size: 16px !default;
$u-action-sheet-cancel-text-color: $u-content-color !default;
$u-action-sheet-cancel-text-font-size: 15px !default;
$u-action-sheet-cancel-text-hover-background-color: rgb(242, 243, 245) !default;

.u-reset-button {
    width: $u-action-sheet-reset-button-width;
}

.u-action-sheet {
    text-align: center;

    &__description {
        font-size: $u-action-sheet-description-font-size;
        color: $u-tips-color;
        margin: $u-action-sheet-description-margin;
        text-align: center;
    }

    &__item-wrap {

        &__item {
            padding: $u-action-sheet-item-wrap-item-padding;
            @include flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;

            &__name {
                font-size: $u-action-sheet-item-wrap-name-font-size;
                color: $u-main-color;
                text-align: center;
            }

            &__subname {
                font-size: $u-action-sheet-item-wrap-subname-font-size;
                color: $u-action-sheet-item-wrap-subname-color;
                margin-top: $u-action-sheet-item-wrap-subname-margin-top;
                text-align: center;
            }
        }
    }

    &__cancel-text {
        font-size: $u-action-sheet-cancel-text-font-size;
        color: $u-action-sheet-cancel-text-color;
        text-align: center;
        padding: $u-action-sheet-cancel-text-font-size;
    }

    &--hover {
        background-color: $u-action-sheet-cancel-text-hover-background-color;
    }
}
</style>
